大學에서의 英語敎育實態 調査硏究 : 實務英語를 中心으로 Emphasizing on Business English

禹惠蓮 이화여자대학교 법정대학 비서학과 1983 비서학연구 Vol.- No.3

In view of the practical value of English and the necessity of its systematic education, the purpose of this study is to diagnose the actual state of Business English in the universities, to discover the problems, and to determine more effective ways of teaching Business English at the university. For this purpose, the same questionnaire was given to 16 teachers who are in charge of Business English; another kind of questionnaire was distributed to 300 students at 12 universities and 3 junior colleges by random sampling. One limitation of this study was that it covered only the Seoul area, the college of liberal arts/social science, and juniors and seniors(sophomores at junior colleges). Another difficulty was that since there was no other preceded studies on this subject, it could not be compared to another study. The findings of the survey and the recommendations based on the findings are as follows: A. Findings 1. Contents of Education a. The majority(97%) of students showed an interest in Business English because it is essential in beginning a career of continuing their studies at a higher educational level(35.6%), and because Business English are emphasized today and required generally(29.5%) b. In Business English education, teachers aim at written communication study for drafting English documents(75 points), reading practice for comprehension(41 points), and English conversation study for oral communication(40 points), in that sequence. c. In accordance with specific characteristics of Business English, its texts are selected by their practicability(46 points), their degree of difficulty(22 points), and their refinement of vocabulary(19 points). d. The first problem in the education of Business English is shortage of competent teachers(about 3 Korean teachers and 1 foreign teacher per department). Another problem is that the college major of these teachers was not English Education but Business Education. Still another problem is the foreign teacher's insufficient experience in Korea. e. Most students' opinion(75%) showed that they had not had much opportunity to study Business English. Relating to the progress of their ability, about 30-40% of the students are not satisfied with their present Business English education because of the poor quality of teaching methods(29.7%), teaching contents(19.0%), facilities(16.3%), text(10.3%), and overcrowded classrooms(17.5%). f. In the evaluation of the students themselves, their ability in written communication was rather good compared to their oral communication. In written communication, 64.4% of the students can write a document in English without much difficulty; in oral communication, 54% of the students and speak with ease. g. Besides taking the course in Business English, a considerable number of student(58.3%) take an outside English course as an extracurricular activity because they wish to refine their English(44.6%) and they are not satisfied with the Business English education in the classroom(34.3%). They usually study with the help of institutes, conversation clubs, studying abroad, and foreigner's tutoring. 2. Institution of Education a. Most departments(75%) teach Business English as subjects in their major study. The title of the Business English course varries according to its specialty and importance. b. Most students who take the course in Business English are in their junior year(56.9%). If classified by their department, the students are majoring in Trading, Business Management, English Language and Literature, Secretarial Science, and Liberal Arts/Social Science. c. Three credit and three class hours per week are common. However, 62.5% of the teachers of written communication and 52.7% of the teachers of oral communication think that the number of class hours per week is not enough for sufficient teaching. B. Recommendations 1. In Business English education, oral communication can be stressed more by effectively completing the reading and comprehension studies in Freshman General English. 2. In order to teach more substantially and/or to give more opportunities to the students to study Business English, more class hours per week and a higher number of classes have to be allowed. 3. The better compilation of suitable teaching materials, teaching methods and reinforcement of faculty must be attained. 4. To teach with more concentration and on an individual basis, the number of students per classroom definitely must be reduced.

도라지 종자 추출물의 멜라토닌 함량 및 항산화능

우혜련(Hyeryeon Woo),김양지(Yangji Kim),이윤(Yoon Lee),김인호(In-Ho Kim),김석중(Seok Joong Kim) 한국식품영양과학회 2018 한국식품영양과학회지 Vol.47 No.9

본 연구에서는 도라지 종자의 기능성을 평가하기 위해 ELISA를 이용한 멜라토닌 함량 분석, 최적 추출용매 선정, 그리고 추출물에 대한 화학적 항산화능 및 3T3-L1 세포주를 이용한 세포 내 항산화능을 조사하였다. 종자로부터 멜라토닌 추출에는 75% 에탄올이 가장 우수하였으며 이 추출물의 멜라토닌 함량은 146.8 ng/g이었다. 해당 추출물의 페놀화합물 함량은 50.2 μg GAE/g이었으며 DPPH 라디칼 소거능, ABTS 라디칼 소거능, FRAP, ORAC법으로 분석한 항산화능이 각각 519.1, 645.1, 471.1, 1,438.7 μmol TE/g으로 나타났다. 이러한 종자 추출물의 멜라토닌 및 페놀화합물함량, 그리고 항산화능은 싹이나 뿌리보다 높았다. 3T3-L1 세포주에 40 μg/mL 추출물을 처리한 세포 내 항산화능 분석에서도 종자 추출물이 21.5 unit의 항산화능을 보인 반면에 싹이나 뿌리 추출물의 항산화능은 나타나지 않았다. 이로부터 도라지 종자는 싹이나 뿌리보다 멜라토닌 함량이 높고 항산화능이 우수한 새로운 기능성 식품자원으로서의 활용가능성을 확인하였다. The melatonin content and antioxidant activity of Platycodon grandiflorum (PG) seed extract were measured and compared to those of PG sprout and root extracts. Among the solvents used to extract melatonin from seeds, 75% ethanol was better than methanol or 25, 50 or 100% ethanol (v/v), resulting in 146.8 ng melatonin per g extract by ELISA assay. The polyphenol content of seed extract prepared using 75% ethanol was 50.2 μg gallic acid equivalent (GAE)/g. This extract also exhibited dose-dependent antioxidant activity in various assays, showing 519.1 μmol Trolox equivalent (TE)/g in 2,2-diphenyl-1-picrylhydrazyl radical scavenging, 645.1 μmol TE/g in 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging, 471.1 μmol TE/g in ferric reducing antioxidant power, and 1,438.7 μmol TE/g in oxygen radical absorbance activity. Both the melatonin content and the antioxidant activity were highest in seed extract, followed by sprout and root extracts. Longer sprouting lowered the melatonin content and the antioxidant capacity. In a cellular antioxidant activity (CAA) test using 3T3-L1 cells, seed extract (40 μg/mL) showed 21.5 units CAA while neither sprout nor root extract exhibited any activity. These results suggest that PG seed is a novel functional foodstuff superior to its sprout and root in melatonin content and antioxidant activity.

Isolation and characterization of delayed senescence mutations in Arabidopsis thaliana

Woo Hye Ryun(우혜련),Kim Haeyoung(김해영),Choy Yoon Hi(최윤희),Nam Hong Gil(남홍길) 한국원예학회 1999 원예과학기술지 Vol.17 No.2

도라지 종자의 영양학적 특성 평가

김양지,우혜련,임지영,김석중 한국응용과학기술학회 2018 한국응용과학기술학회지 Vol.35 No.2

In this study, proximate composition, crude fiber, reducing sugar, free sugars, organic acids, minerals and amino acids of Platycodon grandiflorum seeds were analyzed to evaluate its nutritional value. Moisture, crude protein, crude fat, crude ash and carbohydrate contents of seeds were 6.97, 26.05, 27.46, 3.78 and 35.74%, respectively. Crude fiber of 6.31% and reducing sugars of 1.54% were also determined. Sucrose(1,661 mg/100 g) and lactic acid(1,224 mg/100 g) were most abundant free sugar and organic acid, respectively. Both phosphorus and potassium were main minerals that contained more than 700 mg in 100 g seeds. Amino acids analysis of 100 g seeds showed that glutamic acid(3.45 g), arginine(2.51 g), aspartic acid(1.66 g), leucine(1.29 g), lysine(1.10 g), alanine(1.05 g) and glycine(1.04 g) were abundantly contained in order, while others were less than 1 g. 본 연구에서는 도라지(Platycodon grandiflorum A. DC) 종자의 영양학적 특성을 평가하기 위해 일반성분, 조섬유, 환원당, 유리당, 유기산, 무기질 및 아미노산 함량을 분석하였다. 종자의 수분, 조단백질, 조지방, 조회분, 탄수화물 함량은 각각 6.97, 26.05, 27.46, 3.78, 35.74%였으며 조섬유 함량은 6.31%, 환원당 함량은 1.54%이었다. 종자에 존재하는 유리당으로는 sucrose가 1,661 mg/100 g, 유기산으로는 lactic acid가 1,224 mg/100 g 으로 가장 풍부하였으며, 인과 칼륨이 주요 무기질로서 700 mg/100 g 이상 존재하였다. 종자 100 g에서의 아미노산 조성을 분석한 결과, 글루탐산(3.45 g), 아르기 닌(2.51 g), 아스파르트산(1.66 g), 루신(1.29 g), 라이신(1.10 g), 알라닌(1.05 g), 글리신(1.04 g) 순이었 으며 그 외의 아미노산은 1 g 이하로 존재하였다.

Three positive regulators of leaf senescence in Arabidopsis, ORE1, ORE3 and ORE9, play roles in crosstalk among multiple hormone-mediated senescence pathways

김진희,정경민,우혜련 한국유전학회 2011 Genes & Genomics Vol.33 No.4

Leaf senescence is a developmentally programmed event, but the initiation and progression of leaf senescence are affected by a range of plant hormones including abscisic acid (ABA),ethylene and methyl jasmonate (MeJA). To investigate plant hormone crosstalk during leaf senescence, hormone-induced senescence phenotypes were analyzed in three leaf senescence mutants [ore1 (oresara1), ore3 and ore9] showing delayed senescence phenotypes in age-dependent and dark-induced senescence. The ore mutants exhibited delayed leaf senescence phenotypes following treatment with ABA, ACC (aminocyclopropane-1-carboxylic acid) or MeJA. After each hormone treatment, the photochemical efficiency of photosystem II and chlorophyll content were significantly higher in the ore mutant leaves than in the wild-type leaves. The expression of CAB2and SEN4 in the wild-type was rapidly altered following each hormone treatment. However, the decrease in CAB2 expression and the induction of SEN4 expression in the mutants were less affected by ABA, ACC or MeJA treatment. It is suggested that ORE1, ORE3 and ORE9 are required for the proper progression of leaf senescence mediated by ABA, ethylene and MeJA. This implies that ORE1, ORE3 and ORE9 may be linked to the crosstalk among senescence pathways induced by ABA, ethylene and MeJA, as well as age and darkness.

ArmA and RmtB Were the Predominant 16S RMTase Genes Responsible for Aminoglycoside-resistant Isolates in Korea

이태희,황주희,이우곤,신민경,우혜련,정경민,이창섭 대한의학회 2018 Journal of Korean medical science Vol.33 No.42

Pathogenic gram-negatives that produce 16S ribosomal RNA methyltransferases (16S RMTases) have already been distributed all over the world. To investigate the predominance of aminoglycoside resistance associated with 16S RMTases in Korea, we collected a total of 222 amikacin resistant Gram-negative clinical isolates from patient specimens between 1999 and 2015 from three hospital banks across Korea. ArmA and rmtB were the predominant 16S RMTase genes responsible for aminoglycoside-resistant isolates circulating in Korean community settings although only one rmtA-producing isolate was detected in 2006.